R1:cc5ba7e8017e

Fix Project Hovercards

Summary: Clear the float, remove the abs. position.

Test Plan:
Test a project hovercard, see expected layout.

{F166175}

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: epriestley, Korvin

Differential Revision: https://secure.phabricator.com/D9519